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Merge tag 'trace-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
[linux/fpc-iii.git] / drivers / hwmon / w83791d.c
blob37b25a1474c4633ba40bf4a5fd1d435983357519
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * w83791d.c - Part of lm_sensors, Linux kernel modules for hardware
4 * monitoring
5 *
6 * Copyright (C) 2006-2007 Charles Spirakis <bezaur@gmail.com>
7 */
8
9 /*
10 * Supports following chips:
11 *
12 * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
13 * w83791d 10 5 5 3 0x71 0x5ca3 yes no
14 *
15 * The w83791d chip appears to be part way between the 83781d and the
16 * 83792d. Thus, this file is derived from both the w83792d.c and
17 * w83781d.c files.
18 *
19 * The w83791g chip is the same as the w83791d but lead-free.
20 */
21
22 #include <linux/module.h>
23 #include <linux/init.h>
24 #include <linux/slab.h>
25 #include <linux/i2c.h>
26 #include <linux/hwmon.h>
27 #include <linux/hwmon-vid.h>
28 #include <linux/hwmon-sysfs.h>
29 #include <linux/err.h>
30 #include <linux/mutex.h>
31 #include <linux/jiffies.h>
32
33 #define NUMBER_OF_VIN 10
34 #define NUMBER_OF_FANIN 5
35 #define NUMBER_OF_TEMPIN 3
36 #define NUMBER_OF_PWM 5
37
38 /* Addresses to scan */
39 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
40 I2C_CLIENT_END };
41
42 /* Insmod parameters */
43
44 static unsigned short force_subclients[4];
45 module_param_array(force_subclients, short, NULL, 0);
46 MODULE_PARM_DESC(force_subclients,
47 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
48
49 static bool reset;
50 module_param(reset, bool, 0);
51 MODULE_PARM_DESC(reset, "Set to one to force a hardware chip reset");
52
53 static bool init;
54 module_param(init, bool, 0);
55 MODULE_PARM_DESC(init, "Set to one to force extra software initialization");
56
57 /* The W83791D registers */
58 static const u8 W83791D_REG_IN[NUMBER_OF_VIN] = {
59 0x20, /* VCOREA in DataSheet */
60 0x21, /* VINR0 in DataSheet */
61 0x22, /* +3.3VIN in DataSheet */
62 0x23, /* VDD5V in DataSheet */
63 0x24, /* +12VIN in DataSheet */
64 0x25, /* -12VIN in DataSheet */
65 0x26, /* -5VIN in DataSheet */
66 0xB0, /* 5VSB in DataSheet */
67 0xB1, /* VBAT in DataSheet */
68 0xB2 /* VINR1 in DataSheet */
69 };
70
71 static const u8 W83791D_REG_IN_MAX[NUMBER_OF_VIN] = {
72 0x2B, /* VCOREA High Limit in DataSheet */
73 0x2D, /* VINR0 High Limit in DataSheet */
74 0x2F, /* +3.3VIN High Limit in DataSheet */
75 0x31, /* VDD5V High Limit in DataSheet */
76 0x33, /* +12VIN High Limit in DataSheet */
77 0x35, /* -12VIN High Limit in DataSheet */
78 0x37, /* -5VIN High Limit in DataSheet */
79 0xB4, /* 5VSB High Limit in DataSheet */
80 0xB6, /* VBAT High Limit in DataSheet */
81 0xB8 /* VINR1 High Limit in DataSheet */
82 };
83 static const u8 W83791D_REG_IN_MIN[NUMBER_OF_VIN] = {
84 0x2C, /* VCOREA Low Limit in DataSheet */
85 0x2E, /* VINR0 Low Limit in DataSheet */
86 0x30, /* +3.3VIN Low Limit in DataSheet */
87 0x32, /* VDD5V Low Limit in DataSheet */
88 0x34, /* +12VIN Low Limit in DataSheet */
89 0x36, /* -12VIN Low Limit in DataSheet */
90 0x38, /* -5VIN Low Limit in DataSheet */
91 0xB5, /* 5VSB Low Limit in DataSheet */
92 0xB7, /* VBAT Low Limit in DataSheet */
93 0xB9 /* VINR1 Low Limit in DataSheet */
94 };
95 static const u8 W83791D_REG_FAN[NUMBER_OF_FANIN] = {
96 0x28, /* FAN 1 Count in DataSheet */
97 0x29, /* FAN 2 Count in DataSheet */
98 0x2A, /* FAN 3 Count in DataSheet */
99 0xBA, /* FAN 4 Count in DataSheet */
100 0xBB, /* FAN 5 Count in DataSheet */
101 };
102 static const u8 W83791D_REG_FAN_MIN[NUMBER_OF_FANIN] = {
103 0x3B, /* FAN 1 Count Low Limit in DataSheet */
104 0x3C, /* FAN 2 Count Low Limit in DataSheet */
105 0x3D, /* FAN 3 Count Low Limit in DataSheet */
106 0xBC, /* FAN 4 Count Low Limit in DataSheet */
107 0xBD, /* FAN 5 Count Low Limit in DataSheet */
108 };
109
110 static const u8 W83791D_REG_PWM[NUMBER_OF_PWM] = {
111 0x81, /* PWM 1 duty cycle register in DataSheet */
112 0x83, /* PWM 2 duty cycle register in DataSheet */
113 0x94, /* PWM 3 duty cycle register in DataSheet */
114 0xA0, /* PWM 4 duty cycle register in DataSheet */
115 0xA1, /* PWM 5 duty cycle register in DataSheet */
116 };
117
118 static const u8 W83791D_REG_TEMP_TARGET[3] = {
119 0x85, /* PWM 1 target temperature for temp 1 */
120 0x86, /* PWM 2 target temperature for temp 2 */
121 0x96, /* PWM 3 target temperature for temp 3 */
122 };
123
124 static const u8 W83791D_REG_TEMP_TOL[2] = {
125 0x87, /* PWM 1/2 temperature tolerance */
126 0x97, /* PWM 3 temperature tolerance */
127 };
128
129 static const u8 W83791D_REG_FAN_CFG[2] = {
130 0x84, /* FAN 1/2 configuration */
131 0x95, /* FAN 3 configuration */
132 };
133
134 static const u8 W83791D_REG_FAN_DIV[3] = {
135 0x47, /* contains FAN1 and FAN2 Divisor */
136 0x4b, /* contains FAN3 Divisor */
137 0x5C, /* contains FAN4 and FAN5 Divisor */
138 };
139
140 #define W83791D_REG_BANK 0x4E
141 #define W83791D_REG_TEMP2_CONFIG 0xC2
142 #define W83791D_REG_TEMP3_CONFIG 0xCA
143
144 static const u8 W83791D_REG_TEMP1[3] = {
145 0x27, /* TEMP 1 in DataSheet */
146 0x39, /* TEMP 1 Over in DataSheet */
147 0x3A, /* TEMP 1 Hyst in DataSheet */
148 };
149
150 static const u8 W83791D_REG_TEMP_ADD[2][6] = {
151 {0xC0, /* TEMP 2 in DataSheet */
152 0xC1, /* TEMP 2(0.5 deg) in DataSheet */
153 0xC5, /* TEMP 2 Over High part in DataSheet */
154 0xC6, /* TEMP 2 Over Low part in DataSheet */
155 0xC3, /* TEMP 2 Thyst High part in DataSheet */
156 0xC4}, /* TEMP 2 Thyst Low part in DataSheet */
157 {0xC8, /* TEMP 3 in DataSheet */
158 0xC9, /* TEMP 3(0.5 deg) in DataSheet */
159 0xCD, /* TEMP 3 Over High part in DataSheet */
160 0xCE, /* TEMP 3 Over Low part in DataSheet */
161 0xCB, /* TEMP 3 Thyst High part in DataSheet */
162 0xCC} /* TEMP 3 Thyst Low part in DataSheet */
163 };
164
165 #define W83791D_REG_BEEP_CONFIG 0x4D
166
167 static const u8 W83791D_REG_BEEP_CTRL[3] = {
168 0x56, /* BEEP Control Register 1 */
169 0x57, /* BEEP Control Register 2 */
170 0xA3, /* BEEP Control Register 3 */
171 };
172
173 #define W83791D_REG_GPIO 0x15
174 #define W83791D_REG_CONFIG 0x40
175 #define W83791D_REG_VID_FANDIV 0x47
176 #define W83791D_REG_DID_VID4 0x49
177 #define W83791D_REG_WCHIPID 0x58
178 #define W83791D_REG_CHIPMAN 0x4F
179 #define W83791D_REG_PIN 0x4B
180 #define W83791D_REG_I2C_SUBADDR 0x4A
181
182 #define W83791D_REG_ALARM1 0xA9 /* realtime status register1 */
183 #define W83791D_REG_ALARM2 0xAA /* realtime status register2 */
184 #define W83791D_REG_ALARM3 0xAB /* realtime status register3 */
185
186 #define W83791D_REG_VBAT 0x5D
187 #define W83791D_REG_I2C_ADDR 0x48
188
189 /*
190 * The SMBus locks itself. The Winbond W83791D has a bank select register
191 * (index 0x4e), but the driver only accesses registers in bank 0. Since
192 * we don't switch banks, we don't need any special code to handle
193 * locking access between bank switches
194 */
195 static inline int w83791d_read(struct i2c_client *client, u8 reg)
196 {
197 return i2c_smbus_read_byte_data(client, reg);
198 }
199
200 static inline int w83791d_write(struct i2c_client *client, u8 reg, u8 value)
201 {
202 return i2c_smbus_write_byte_data(client, reg, value);
203 }
204
205 /*
206 * The analog voltage inputs have 16mV LSB. Since the sysfs output is
207 * in mV as would be measured on the chip input pin, need to just
208 * multiply/divide by 16 to translate from/to register values.
209 */
210 #define IN_TO_REG(val) (clamp_val((((val) + 8) / 16), 0, 255))
211 #define IN_FROM_REG(val) ((val) * 16)
212
213 static u8 fan_to_reg(long rpm, int div)
214 {
215 if (rpm == 0)
216 return 255;
217 rpm = clamp_val(rpm, 1, 1000000);
218 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
219 }
220
221 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \
222 ((val) == 255 ? 0 : \
223 1350000 / ((val) * (div))))
224
225 /* for temp1 which is 8-bit resolution, LSB = 1 degree Celsius */
226 #define TEMP1_FROM_REG(val) ((val) * 1000)
227 #define TEMP1_TO_REG(val) ((val) <= -128000 ? -128 : \
228 (val) >= 127000 ? 127 : \
229 (val) < 0 ? ((val) - 500) / 1000 : \
230 ((val) + 500) / 1000)
231
232 /*
233 * for temp2 and temp3 which are 9-bit resolution, LSB = 0.5 degree Celsius
234 * Assumes the top 8 bits are the integral amount and the bottom 8 bits
235 * are the fractional amount. Since we only have 0.5 degree resolution,
236 * the bottom 7 bits will always be zero
237 */
238 #define TEMP23_FROM_REG(val) ((val) / 128 * 500)
239 #define TEMP23_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \
240 127500), 500) * 128)
241
242 /* for thermal cruise target temp, 7-bits, LSB = 1 degree Celsius */
243 #define TARGET_TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \
244 1000)
245
246 /* for thermal cruise temp tolerance, 4-bits, LSB = 1 degree Celsius */
247 #define TOL_TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 15000), \
248 1000)
249
250 #define BEEP_MASK_TO_REG(val) ((val) & 0xffffff)
251 #define BEEP_MASK_FROM_REG(val) ((val) & 0xffffff)
252
253 #define DIV_FROM_REG(val) (1 << (val))
254
255 static u8 div_to_reg(int nr, long val)
256 {
257 int i;
258
259 /* fan divisors max out at 128 */
260 val = clamp_val(val, 1, 128) >> 1;
261 for (i = 0; i < 7; i++) {
262 if (val == 0)
263 break;
264 val >>= 1;
265 }
266 return (u8) i;
267 }
268
269 struct w83791d_data {
270 struct device *hwmon_dev;
271 struct mutex update_lock;
272
273 char valid; /* !=0 if following fields are valid */
274 unsigned long last_updated; /* In jiffies */
275
276 /* array of 2 pointers to subclients */
277 struct i2c_client *lm75[2];
278
279 /* volts */
280 u8 in[NUMBER_OF_VIN]; /* Register value */
281 u8 in_max[NUMBER_OF_VIN]; /* Register value */
282 u8 in_min[NUMBER_OF_VIN]; /* Register value */
283
284 /* fans */
285 u8 fan[NUMBER_OF_FANIN]; /* Register value */
286 u8 fan_min[NUMBER_OF_FANIN]; /* Register value */
287 u8 fan_div[NUMBER_OF_FANIN]; /* Register encoding, shifted right */
288
289 /* Temperature sensors */
290
291 s8 temp1[3]; /* current, over, thyst */
292 s16 temp_add[2][3]; /* fixed point value. Top 8 bits are the
293 * integral part, bottom 8 bits are the
294 * fractional part. We only use the top
295 * 9 bits as the resolution is only
296 * to the 0.5 degree C...
297 * two sensors with three values
298 * (cur, over, hyst)
299 */
300
301 /* PWMs */
302 u8 pwm[5]; /* pwm duty cycle */
303 u8 pwm_enable[3]; /* pwm enable status for fan 1-3
304 * (fan 4-5 only support manual mode)
305 */
306
307 u8 temp_target[3]; /* pwm 1-3 target temperature */
308 u8 temp_tolerance[3]; /* pwm 1-3 temperature tolerance */
309
310 /* Misc */
311 u32 alarms; /* realtime status register encoding,combined */
312 u8 beep_enable; /* Global beep enable */
313 u32 beep_mask; /* Mask off specific beeps */
314 u8 vid; /* Register encoding, combined */
315 u8 vrm; /* hwmon-vid */
316 };
317
318 static int w83791d_probe(struct i2c_client *client);
319 static int w83791d_detect(struct i2c_client *client,
320 struct i2c_board_info *info);
321 static int w83791d_remove(struct i2c_client *client);
322
323 static int w83791d_read(struct i2c_client *client, u8 reg);
324 static int w83791d_write(struct i2c_client *client, u8 reg, u8 value);
325 static struct w83791d_data *w83791d_update_device(struct device *dev);
326
327 #ifdef DEBUG
328 static void w83791d_print_debug(struct w83791d_data *data, struct device *dev);
329 #endif
330
331 static void w83791d_init_client(struct i2c_client *client);
332
333 static const struct i2c_device_id w83791d_id[] = {
334 { "w83791d", 0 },
335 { }
336 };
337 MODULE_DEVICE_TABLE(i2c, w83791d_id);
338
339 static struct i2c_driver w83791d_driver = {
340 .class = I2C_CLASS_HWMON,
341 .driver = {
342 .name = "w83791d",
343 },
344 .probe_new = w83791d_probe,
345 .remove = w83791d_remove,
346 .id_table = w83791d_id,
347 .detect = w83791d_detect,
348 .address_list = normal_i2c,
349 };
350
351 /* following are the sysfs callback functions */
352 #define show_in_reg(reg) \
353 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
354 char *buf) \
355 { \
356 struct sensor_device_attribute *sensor_attr = \
357 to_sensor_dev_attr(attr); \
358 struct w83791d_data *data = w83791d_update_device(dev); \
359 int nr = sensor_attr->index; \
360 return sprintf(buf, "%d\n", IN_FROM_REG(data->reg[nr])); \
361 }
362
363 show_in_reg(in);
364 show_in_reg(in_min);
365 show_in_reg(in_max);
366
367 #define store_in_reg(REG, reg) \
368 static ssize_t store_in_##reg(struct device *dev, \
369 struct device_attribute *attr, \
370 const char *buf, size_t count) \
371 { \
372 struct sensor_device_attribute *sensor_attr = \
373 to_sensor_dev_attr(attr); \
374 struct i2c_client *client = to_i2c_client(dev); \
375 struct w83791d_data *data = i2c_get_clientdata(client); \
376 int nr = sensor_attr->index; \
377 unsigned long val; \
378 int err = kstrtoul(buf, 10, &val); \
379 if (err) \
380 return err; \
381 mutex_lock(&data->update_lock); \
382 data->in_##reg[nr] = IN_TO_REG(val); \
383 w83791d_write(client, W83791D_REG_IN_##REG[nr], data->in_##reg[nr]); \
384 mutex_unlock(&data->update_lock); \
385 \
386 return count; \
387 }
388 store_in_reg(MIN, min);
389 store_in_reg(MAX, max);
390
391 static struct sensor_device_attribute sda_in_input[] = {
392 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
393 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
394 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
395 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
396 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
397 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
398 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
399 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
400 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
401 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
402 };
403
404 static struct sensor_device_attribute sda_in_min[] = {
405 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
406 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
407 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
408 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
409 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
410 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
411 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
412 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
413 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
414 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
415 };
416
417 static struct sensor_device_attribute sda_in_max[] = {
418 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
419 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
420 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
421 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
422 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
423 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
424 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
425 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
426 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
427 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
428 };
429
430
431 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
432 char *buf)
433 {
434 struct sensor_device_attribute *sensor_attr =
435 to_sensor_dev_attr(attr);
436 struct w83791d_data *data = w83791d_update_device(dev);
437 int bitnr = sensor_attr->index;
438
439 return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1);
440 }
441
442 static ssize_t store_beep(struct device *dev, struct device_attribute *attr,
443 const char *buf, size_t count)
444 {
445 struct sensor_device_attribute *sensor_attr =
446 to_sensor_dev_attr(attr);
447 struct i2c_client *client = to_i2c_client(dev);
448 struct w83791d_data *data = i2c_get_clientdata(client);
449 int bitnr = sensor_attr->index;
450 int bytenr = bitnr / 8;
451 unsigned long val;
452 int err;
453
454 err = kstrtoul(buf, 10, &val);
455 if (err)
456 return err;
457
458 val = val ? 1 : 0;
459
460 mutex_lock(&data->update_lock);
461
462 data->beep_mask &= ~(0xff << (bytenr * 8));
463 data->beep_mask |= w83791d_read(client, W83791D_REG_BEEP_CTRL[bytenr])
464 << (bytenr * 8);
465
466 data->beep_mask &= ~(1 << bitnr);
467 data->beep_mask |= val << bitnr;
468
469 w83791d_write(client, W83791D_REG_BEEP_CTRL[bytenr],
470 (data->beep_mask >> (bytenr * 8)) & 0xff);
471
472 mutex_unlock(&data->update_lock);
473
474 return count;
475 }
476
477 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
478 char *buf)
479 {
480 struct sensor_device_attribute *sensor_attr =
481 to_sensor_dev_attr(attr);
482 struct w83791d_data *data = w83791d_update_device(dev);
483 int bitnr = sensor_attr->index;
484
485 return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
486 }
487
488 /*
489 * Note: The bitmask for the beep enable/disable is different than
490 * the bitmask for the alarm.
491 */
492 static struct sensor_device_attribute sda_in_beep[] = {
493 SENSOR_ATTR(in0_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 0),
494 SENSOR_ATTR(in1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 13),
495 SENSOR_ATTR(in2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 2),
496 SENSOR_ATTR(in3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 3),
497 SENSOR_ATTR(in4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 8),
498 SENSOR_ATTR(in5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 9),
499 SENSOR_ATTR(in6_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 10),
500 SENSOR_ATTR(in7_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 16),
501 SENSOR_ATTR(in8_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 17),
502 SENSOR_ATTR(in9_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 14),
503 };
504
505 static struct sensor_device_attribute sda_in_alarm[] = {
506 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
507 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
508 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
509 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
510 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
511 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9),
512 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10),
513 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19),
514 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20),
515 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 14),
516 };
517
518 #define show_fan_reg(reg) \
519 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
520 char *buf) \
521 { \
522 struct sensor_device_attribute *sensor_attr = \
523 to_sensor_dev_attr(attr); \
524 struct w83791d_data *data = w83791d_update_device(dev); \
525 int nr = sensor_attr->index; \
526 return sprintf(buf, "%d\n", \
527 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
528 }
529
530 show_fan_reg(fan);
531 show_fan_reg(fan_min);
532
533 static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr,
534 const char *buf, size_t count)
535 {
536 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
537 struct i2c_client *client = to_i2c_client(dev);
538 struct w83791d_data *data = i2c_get_clientdata(client);
539 int nr = sensor_attr->index;
540 unsigned long val;
541 int err;
542
543 err = kstrtoul(buf, 10, &val);
544 if (err)
545 return err;
546
547 mutex_lock(&data->update_lock);
548 data->fan_min[nr] = fan_to_reg(val, DIV_FROM_REG(data->fan_div[nr]));
549 w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
550 mutex_unlock(&data->update_lock);
551
552 return count;
553 }
554
555 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
556 char *buf)
557 {
558 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
559 int nr = sensor_attr->index;
560 struct w83791d_data *data = w83791d_update_device(dev);
561 return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr]));
562 }
563
564 /*
565 * Note: we save and restore the fan minimum here, because its value is
566 * determined in part by the fan divisor. This follows the principle of
567 * least surprise; the user doesn't expect the fan minimum to change just
568 * because the divisor changed.
569 */
570 static ssize_t store_fan_div(struct device *dev, struct device_attribute *attr,
571 const char *buf, size_t count)
572 {
573 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
574 struct i2c_client *client = to_i2c_client(dev);
575 struct w83791d_data *data = i2c_get_clientdata(client);
576 int nr = sensor_attr->index;
577 unsigned long min;
578 u8 tmp_fan_div;
579 u8 fan_div_reg;
580 u8 vbat_reg;
581 int indx = 0;
582 u8 keep_mask = 0;
583 u8 new_shift = 0;
584 unsigned long val;
585 int err;
586
587 err = kstrtoul(buf, 10, &val);
588 if (err)
589 return err;
590
591 /* Save fan_min */
592 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
593
594 mutex_lock(&data->update_lock);
595 data->fan_div[nr] = div_to_reg(nr, val);
596
597 switch (nr) {
598 case 0:
599 indx = 0;
600 keep_mask = 0xcf;
601 new_shift = 4;
602 break;
603 case 1:
604 indx = 0;
605 keep_mask = 0x3f;
606 new_shift = 6;
607 break;
608 case 2:
609 indx = 1;
610 keep_mask = 0x3f;
611 new_shift = 6;
612 break;
613 case 3:
614 indx = 2;
615 keep_mask = 0xf8;
616 new_shift = 0;
617 break;
618 case 4:
619 indx = 2;
620 keep_mask = 0x8f;
621 new_shift = 4;
622 break;
623 #ifdef DEBUG
624 default:
625 dev_warn(dev, "store_fan_div: Unexpected nr seen: %d\n", nr);
626 count = -EINVAL;
627 goto err_exit;
628 #endif
629 }
630
631 fan_div_reg = w83791d_read(client, W83791D_REG_FAN_DIV[indx])
632 & keep_mask;
633 tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask;
634
635 w83791d_write(client, W83791D_REG_FAN_DIV[indx],
636 fan_div_reg | tmp_fan_div);
637
638 /* Bit 2 of fans 0-2 is stored in the vbat register (bits 5-7) */
639 if (nr < 3) {
640 keep_mask = ~(1 << (nr + 5));
641 vbat_reg = w83791d_read(client, W83791D_REG_VBAT)
642 & keep_mask;
643 tmp_fan_div = (data->fan_div[nr] << (3 + nr)) & ~keep_mask;
644 w83791d_write(client, W83791D_REG_VBAT,
645 vbat_reg | tmp_fan_div);
646 }
647
648 /* Restore fan_min */
649 data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr]));
650 w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
651
652 #ifdef DEBUG
653 err_exit:
654 #endif
655 mutex_unlock(&data->update_lock);
656
657 return count;
658 }
659
660 static struct sensor_device_attribute sda_fan_input[] = {
661 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
662 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
663 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
664 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
665 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
666 };
667
668 static struct sensor_device_attribute sda_fan_min[] = {
669 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO,
670 show_fan_min, store_fan_min, 0),
671 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO,
672 show_fan_min, store_fan_min, 1),
673 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO,
674 show_fan_min, store_fan_min, 2),
675 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO,
676 show_fan_min, store_fan_min, 3),
677 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO,
678 show_fan_min, store_fan_min, 4),
679 };
680
681 static struct sensor_device_attribute sda_fan_div[] = {
682 SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO,
683 show_fan_div, store_fan_div, 0),
684 SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO,
685 show_fan_div, store_fan_div, 1),
686 SENSOR_ATTR(fan3_div, S_IWUSR | S_IRUGO,
687 show_fan_div, store_fan_div, 2),
688 SENSOR_ATTR(fan4_div, S_IWUSR | S_IRUGO,
689 show_fan_div, store_fan_div, 3),
690 SENSOR_ATTR(fan5_div, S_IWUSR | S_IRUGO,
691 show_fan_div, store_fan_div, 4),
692 };
693
694 static struct sensor_device_attribute sda_fan_beep[] = {
695 SENSOR_ATTR(fan1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 6),
696 SENSOR_ATTR(fan2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 7),
697 SENSOR_ATTR(fan3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 11),
698 SENSOR_ATTR(fan4_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 21),
699 SENSOR_ATTR(fan5_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 22),
700 };
701
702 static struct sensor_device_attribute sda_fan_alarm[] = {
703 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
704 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
705 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
706 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21),
707 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22),
708 };
709
710 /* read/write PWMs */
711 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
712 char *buf)
713 {
714 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
715 int nr = sensor_attr->index;
716 struct w83791d_data *data = w83791d_update_device(dev);
717 return sprintf(buf, "%u\n", data->pwm[nr]);
718 }
719
720 static ssize_t store_pwm(struct device *dev, struct device_attribute *attr,
721 const char *buf, size_t count)
722 {
723 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
724 struct i2c_client *client = to_i2c_client(dev);
725 struct w83791d_data *data = i2c_get_clientdata(client);
726 int nr = sensor_attr->index;
727 unsigned long val;
728
729 if (kstrtoul(buf, 10, &val))
730 return -EINVAL;
731
732 mutex_lock(&data->update_lock);
733 data->pwm[nr] = clamp_val(val, 0, 255);
734 w83791d_write(client, W83791D_REG_PWM[nr], data->pwm[nr]);
735 mutex_unlock(&data->update_lock);
736 return count;
737 }
738
739 static struct sensor_device_attribute sda_pwm[] = {
740 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO,
741 show_pwm, store_pwm, 0),
742 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO,
743 show_pwm, store_pwm, 1),
744 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO,
745 show_pwm, store_pwm, 2),
746 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO,
747 show_pwm, store_pwm, 3),
748 SENSOR_ATTR(pwm5, S_IWUSR | S_IRUGO,
749 show_pwm, store_pwm, 4),
750 };
751
752 static ssize_t show_pwmenable(struct device *dev, struct device_attribute *attr,
753 char *buf)
754 {
755 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
756 int nr = sensor_attr->index;
757 struct w83791d_data *data = w83791d_update_device(dev);
758 return sprintf(buf, "%u\n", data->pwm_enable[nr] + 1);
759 }
760
761 static ssize_t store_pwmenable(struct device *dev,
762 struct device_attribute *attr, const char *buf, size_t count)
763 {
764 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
765 struct i2c_client *client = to_i2c_client(dev);
766 struct w83791d_data *data = i2c_get_clientdata(client);
767 int nr = sensor_attr->index;
768 unsigned long val;
769 u8 reg_cfg_tmp;
770 u8 reg_idx = 0;
771 u8 val_shift = 0;
772 u8 keep_mask = 0;
773
774 int ret = kstrtoul(buf, 10, &val);
775
776 if (ret || val < 1 || val > 3)
777 return -EINVAL;
778
779 mutex_lock(&data->update_lock);
780 data->pwm_enable[nr] = val - 1;
781 switch (nr) {
782 case 0:
783 reg_idx = 0;
784 val_shift = 2;
785 keep_mask = 0xf3;
786 break;
787 case 1:
788 reg_idx = 0;
789 val_shift = 4;
790 keep_mask = 0xcf;
791 break;
792 case 2:
793 reg_idx = 1;
794 val_shift = 2;
795 keep_mask = 0xf3;
796 break;
797 }
798
799 reg_cfg_tmp = w83791d_read(client, W83791D_REG_FAN_CFG[reg_idx]);
800 reg_cfg_tmp = (reg_cfg_tmp & keep_mask) |
801 data->pwm_enable[nr] << val_shift;
802
803 w83791d_write(client, W83791D_REG_FAN_CFG[reg_idx], reg_cfg_tmp);
804 mutex_unlock(&data->update_lock);
805
806 return count;
807 }
808 static struct sensor_device_attribute sda_pwmenable[] = {
809 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
810 show_pwmenable, store_pwmenable, 0),
811 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
812 show_pwmenable, store_pwmenable, 1),
813 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
814 show_pwmenable, store_pwmenable, 2),
815 };
816
817 /* For Smart Fan I / Thermal Cruise */
818 static ssize_t show_temp_target(struct device *dev,
819 struct device_attribute *attr, char *buf)
820 {
821 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
822 struct w83791d_data *data = w83791d_update_device(dev);
823 int nr = sensor_attr->index;
824 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_target[nr]));
825 }
826
827 static ssize_t store_temp_target(struct device *dev,
828 struct device_attribute *attr, const char *buf, size_t count)
829 {
830 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
831 struct i2c_client *client = to_i2c_client(dev);
832 struct w83791d_data *data = i2c_get_clientdata(client);
833 int nr = sensor_attr->index;
834 long val;
835 u8 target_mask;
836
837 if (kstrtol(buf, 10, &val))
838 return -EINVAL;
839
840 mutex_lock(&data->update_lock);
841 data->temp_target[nr] = TARGET_TEMP_TO_REG(val);
842 target_mask = w83791d_read(client,
843 W83791D_REG_TEMP_TARGET[nr]) & 0x80;
844 w83791d_write(client, W83791D_REG_TEMP_TARGET[nr],
845 data->temp_target[nr] | target_mask);
846 mutex_unlock(&data->update_lock);
847 return count;
848 }
849
850 static struct sensor_device_attribute sda_temp_target[] = {
851 SENSOR_ATTR(temp1_target, S_IWUSR | S_IRUGO,
852 show_temp_target, store_temp_target, 0),
853 SENSOR_ATTR(temp2_target, S_IWUSR | S_IRUGO,
854 show_temp_target, store_temp_target, 1),
855 SENSOR_ATTR(temp3_target, S_IWUSR | S_IRUGO,
856 show_temp_target, store_temp_target, 2),
857 };
858
859 static ssize_t show_temp_tolerance(struct device *dev,
860 struct device_attribute *attr, char *buf)
861 {
862 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
863 struct w83791d_data *data = w83791d_update_device(dev);
864 int nr = sensor_attr->index;
865 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp_tolerance[nr]));
866 }
867
868 static ssize_t store_temp_tolerance(struct device *dev,
869 struct device_attribute *attr, const char *buf, size_t count)
870 {
871 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
872 struct i2c_client *client = to_i2c_client(dev);
873 struct w83791d_data *data = i2c_get_clientdata(client);
874 int nr = sensor_attr->index;
875 unsigned long val;
876 u8 target_mask;
877 u8 reg_idx = 0;
878 u8 val_shift = 0;
879 u8 keep_mask = 0;
880
881 if (kstrtoul(buf, 10, &val))
882 return -EINVAL;
883
884 switch (nr) {
885 case 0:
886 reg_idx = 0;
887 val_shift = 0;
888 keep_mask = 0xf0;
889 break;
890 case 1:
891 reg_idx = 0;
892 val_shift = 4;
893 keep_mask = 0x0f;
894 break;
895 case 2:
896 reg_idx = 1;
897 val_shift = 0;
898 keep_mask = 0xf0;
899 break;
900 }
901
902 mutex_lock(&data->update_lock);
903 data->temp_tolerance[nr] = TOL_TEMP_TO_REG(val);
904 target_mask = w83791d_read(client,
905 W83791D_REG_TEMP_TOL[reg_idx]) & keep_mask;
906 w83791d_write(client, W83791D_REG_TEMP_TOL[reg_idx],
907 (data->temp_tolerance[nr] << val_shift) | target_mask);
908 mutex_unlock(&data->update_lock);
909 return count;
910 }
911
912 static struct sensor_device_attribute sda_temp_tolerance[] = {
913 SENSOR_ATTR(temp1_tolerance, S_IWUSR | S_IRUGO,
914 show_temp_tolerance, store_temp_tolerance, 0),
915 SENSOR_ATTR(temp2_tolerance, S_IWUSR | S_IRUGO,
916 show_temp_tolerance, store_temp_tolerance, 1),
917 SENSOR_ATTR(temp3_tolerance, S_IWUSR | S_IRUGO,
918 show_temp_tolerance, store_temp_tolerance, 2),
919 };
920
921 /* read/write the temperature1, includes measured value and limits */
922 static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr,
923 char *buf)
924 {
925 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
926 struct w83791d_data *data = w83791d_update_device(dev);
927 return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[attr->index]));
928 }
929
930 static ssize_t store_temp1(struct device *dev, struct device_attribute *devattr,
931 const char *buf, size_t count)
932 {
933 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
934 struct i2c_client *client = to_i2c_client(dev);
935 struct w83791d_data *data = i2c_get_clientdata(client);
936 int nr = attr->index;
937 long val;
938 int err;
939
940 err = kstrtol(buf, 10, &val);
941 if (err)
942 return err;
943
944 mutex_lock(&data->update_lock);
945 data->temp1[nr] = TEMP1_TO_REG(val);
946 w83791d_write(client, W83791D_REG_TEMP1[nr], data->temp1[nr]);
947 mutex_unlock(&data->update_lock);
948 return count;
949 }
950
951 /* read/write temperature2-3, includes measured value and limits */
952 static ssize_t show_temp23(struct device *dev, struct device_attribute *devattr,
953 char *buf)
954 {
955 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
956 struct w83791d_data *data = w83791d_update_device(dev);
957 int nr = attr->nr;
958 int index = attr->index;
959 return sprintf(buf, "%d\n", TEMP23_FROM_REG(data->temp_add[nr][index]));
960 }
961
962 static ssize_t store_temp23(struct device *dev,
963 struct device_attribute *devattr,
964 const char *buf, size_t count)
965 {
966 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
967 struct i2c_client *client = to_i2c_client(dev);
968 struct w83791d_data *data = i2c_get_clientdata(client);
969 long val;
970 int err;
971 int nr = attr->nr;
972 int index = attr->index;
973
974 err = kstrtol(buf, 10, &val);
975 if (err)
976 return err;
977
978 mutex_lock(&data->update_lock);
979 data->temp_add[nr][index] = TEMP23_TO_REG(val);
980 w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2],
981 data->temp_add[nr][index] >> 8);
982 w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2 + 1],
983 data->temp_add[nr][index] & 0x80);
984 mutex_unlock(&data->update_lock);
985
986 return count;
987 }
988
989 static struct sensor_device_attribute_2 sda_temp_input[] = {
990 SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0),
991 SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0),
992 SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0),
993 };
994
995 static struct sensor_device_attribute_2 sda_temp_max[] = {
996 SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
997 show_temp1, store_temp1, 0, 1),
998 SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR,
999 show_temp23, store_temp23, 0, 1),
1000 SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR,
1001 show_temp23, store_temp23, 1, 1),
1002 };
1003
1004 static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
1005 SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1006 show_temp1, store_temp1, 0, 2),
1007 SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1008 show_temp23, store_temp23, 0, 2),
1009 SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1010 show_temp23, store_temp23, 1, 2),
1011 };
1012
1013 /*
1014 * Note: The bitmask for the beep enable/disable is different than
1015 * the bitmask for the alarm.
1016 */
1017 static struct sensor_device_attribute sda_temp_beep[] = {
1018 SENSOR_ATTR(temp1_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 4),
1019 SENSOR_ATTR(temp2_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 5),
1020 SENSOR_ATTR(temp3_beep, S_IWUSR | S_IRUGO, show_beep, store_beep, 1),
1021 };
1022
1023 static struct sensor_device_attribute sda_temp_alarm[] = {
1024 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
1025 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
1026 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
1027 };
1028
1029 /* get realtime status of all sensors items: voltage, temp, fan */
1030 static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
1031 char *buf)
1032 {
1033 struct w83791d_data *data = w83791d_update_device(dev);
1034 return sprintf(buf, "%u\n", data->alarms);
1035 }
1036
1037 static DEVICE_ATTR_RO(alarms);
1038
1039 /* Beep control */
1040
1041 #define GLOBAL_BEEP_ENABLE_SHIFT 15
1042 #define GLOBAL_BEEP_ENABLE_MASK (1 << GLOBAL_BEEP_ENABLE_SHIFT)
1043
1044 static ssize_t show_beep_enable(struct device *dev,
1045 struct device_attribute *attr, char *buf)
1046 {
1047 struct w83791d_data *data = w83791d_update_device(dev);
1048 return sprintf(buf, "%d\n", data->beep_enable);
1049 }
1050
1051 static ssize_t show_beep_mask(struct device *dev,
1052 struct device_attribute *attr, char *buf)
1053 {
1054 struct w83791d_data *data = w83791d_update_device(dev);
1055 return sprintf(buf, "%d\n", BEEP_MASK_FROM_REG(data->beep_mask));
1056 }
1057
1058
1059 static ssize_t store_beep_mask(struct device *dev,
1060 struct device_attribute *attr,
1061 const char *buf, size_t count)
1062 {
1063 struct i2c_client *client = to_i2c_client(dev);
1064 struct w83791d_data *data = i2c_get_clientdata(client);
1065 int i;
1066 long val;
1067 int err;
1068
1069 err = kstrtol(buf, 10, &val);
1070 if (err)
1071 return err;
1072
1073 mutex_lock(&data->update_lock);
1074
1075 /*
1076 * The beep_enable state overrides any enabling request from
1077 * the masks
1078 */
1079 data->beep_mask = BEEP_MASK_TO_REG(val) & ~GLOBAL_BEEP_ENABLE_MASK;
1080 data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1081
1082 val = data->beep_mask;
1083
1084 for (i = 0; i < 3; i++) {
1085 w83791d_write(client, W83791D_REG_BEEP_CTRL[i], (val & 0xff));
1086 val >>= 8;
1087 }
1088
1089 mutex_unlock(&data->update_lock);
1090
1091 return count;
1092 }
1093
1094 static ssize_t store_beep_enable(struct device *dev,
1095 struct device_attribute *attr,
1096 const char *buf, size_t count)
1097 {
1098 struct i2c_client *client = to_i2c_client(dev);
1099 struct w83791d_data *data = i2c_get_clientdata(client);
1100 long val;
1101 int err;
1102
1103 err = kstrtol(buf, 10, &val);
1104 if (err)
1105 return err;
1106
1107 mutex_lock(&data->update_lock);
1108
1109 data->beep_enable = val ? 1 : 0;
1110
1111 /* Keep the full mask value in sync with the current enable */
1112 data->beep_mask &= ~GLOBAL_BEEP_ENABLE_MASK;
1113 data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
1114
1115 /*
1116 * The global control is in the second beep control register
1117 * so only need to update that register
1118 */
1119 val = (data->beep_mask >> 8) & 0xff;
1120
1121 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], val);
1122
1123 mutex_unlock(&data->update_lock);
1124
1125 return count;
1126 }
1127
1128 static struct sensor_device_attribute sda_beep_ctrl[] = {
1129 SENSOR_ATTR(beep_enable, S_IRUGO | S_IWUSR,
1130 show_beep_enable, store_beep_enable, 0),
1131 SENSOR_ATTR(beep_mask, S_IRUGO | S_IWUSR,
1132 show_beep_mask, store_beep_mask, 1)
1133 };
1134
1135 /* cpu voltage regulation information */
1136 static ssize_t cpu0_vid_show(struct device *dev,
1137 struct device_attribute *attr, char *buf)
1138 {
1139 struct w83791d_data *data = w83791d_update_device(dev);
1140 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1141 }
1142
1143 static DEVICE_ATTR_RO(cpu0_vid);
1144
1145 static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
1146 char *buf)
1147 {
1148 struct w83791d_data *data = dev_get_drvdata(dev);
1149 return sprintf(buf, "%d\n", data->vrm);
1150 }
1151
1152 static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
1153 const char *buf, size_t count)
1154 {
1155 struct w83791d_data *data = dev_get_drvdata(dev);
1156 unsigned long val;
1157 int err;
1158
1159 /*
1160 * No lock needed as vrm is internal to the driver
1161 * (not read from a chip register) and so is not
1162 * updated in w83791d_update_device()
1163 */
1164
1165 err = kstrtoul(buf, 10, &val);
1166 if (err)
1167 return err;
1168
1169 if (val > 255)
1170 return -EINVAL;
1171
1172 data->vrm = val;
1173 return count;
1174 }
1175
1176 static DEVICE_ATTR_RW(vrm);
1177
1178 #define IN_UNIT_ATTRS(X) \
1179 &sda_in_input[X].dev_attr.attr, \
1180 &sda_in_min[X].dev_attr.attr, \
1181 &sda_in_max[X].dev_attr.attr, \
1182 &sda_in_beep[X].dev_attr.attr, \
1183 &sda_in_alarm[X].dev_attr.attr
1184
1185 #define FAN_UNIT_ATTRS(X) \
1186 &sda_fan_input[X].dev_attr.attr, \
1187 &sda_fan_min[X].dev_attr.attr, \
1188 &sda_fan_div[X].dev_attr.attr, \
1189 &sda_fan_beep[X].dev_attr.attr, \
1190 &sda_fan_alarm[X].dev_attr.attr
1191
1192 #define TEMP_UNIT_ATTRS(X) \
1193 &sda_temp_input[X].dev_attr.attr, \
1194 &sda_temp_max[X].dev_attr.attr, \
1195 &sda_temp_max_hyst[X].dev_attr.attr, \
1196 &sda_temp_beep[X].dev_attr.attr, \
1197 &sda_temp_alarm[X].dev_attr.attr
1198
1199 static struct attribute *w83791d_attributes[] = {
1200 IN_UNIT_ATTRS(0),
1201 IN_UNIT_ATTRS(1),
1202 IN_UNIT_ATTRS(2),
1203 IN_UNIT_ATTRS(3),
1204 IN_UNIT_ATTRS(4),
1205 IN_UNIT_ATTRS(5),
1206 IN_UNIT_ATTRS(6),
1207 IN_UNIT_ATTRS(7),
1208 IN_UNIT_ATTRS(8),
1209 IN_UNIT_ATTRS(9),
1210 FAN_UNIT_ATTRS(0),
1211 FAN_UNIT_ATTRS(1),
1212 FAN_UNIT_ATTRS(2),
1213 TEMP_UNIT_ATTRS(0),
1214 TEMP_UNIT_ATTRS(1),
1215 TEMP_UNIT_ATTRS(2),
1216 &dev_attr_alarms.attr,
1217 &sda_beep_ctrl[0].dev_attr.attr,
1218 &sda_beep_ctrl[1].dev_attr.attr,
1219 &dev_attr_cpu0_vid.attr,
1220 &dev_attr_vrm.attr,
1221 &sda_pwm[0].dev_attr.attr,
1222 &sda_pwm[1].dev_attr.attr,
1223 &sda_pwm[2].dev_attr.attr,
1224 &sda_pwmenable[0].dev_attr.attr,
1225 &sda_pwmenable[1].dev_attr.attr,
1226 &sda_pwmenable[2].dev_attr.attr,
1227 &sda_temp_target[0].dev_attr.attr,
1228 &sda_temp_target[1].dev_attr.attr,
1229 &sda_temp_target[2].dev_attr.attr,
1230 &sda_temp_tolerance[0].dev_attr.attr,
1231 &sda_temp_tolerance[1].dev_attr.attr,
1232 &sda_temp_tolerance[2].dev_attr.attr,
1233 NULL
1234 };
1235
1236 static const struct attribute_group w83791d_group = {
1237 .attrs = w83791d_attributes,
1238 };
1239
1240 /*
1241 * Separate group of attributes for fan/pwm 4-5. Their pins can also be
1242 * in use for GPIO in which case their sysfs-interface should not be made
1243 * available
1244 */
1245 static struct attribute *w83791d_attributes_fanpwm45[] = {
1246 FAN_UNIT_ATTRS(3),
1247 FAN_UNIT_ATTRS(4),
1248 &sda_pwm[3].dev_attr.attr,
1249 &sda_pwm[4].dev_attr.attr,
1250 NULL
1251 };
1252
1253 static const struct attribute_group w83791d_group_fanpwm45 = {
1254 .attrs = w83791d_attributes_fanpwm45,
1255 };
1256
1257 static int w83791d_detect_subclients(struct i2c_client *client)
1258 {
1259 struct i2c_adapter *adapter = client->adapter;
1260 struct w83791d_data *data = i2c_get_clientdata(client);
1261 int address = client->addr;
1262 int i, id;
1263 u8 val;
1264
1265 id = i2c_adapter_id(adapter);
1266 if (force_subclients[0] == id && force_subclients[1] == address) {
1267 for (i = 2; i <= 3; i++) {
1268 if (force_subclients[i] < 0x48 ||
1269 force_subclients[i] > 0x4f) {
1270 dev_err(&client->dev,
1271 "invalid subclient "
1272 "address %d; must be 0x48-0x4f\n",
1273 force_subclients[i]);
1274 return -ENODEV;
1275 }
1276 }
1277 w83791d_write(client, W83791D_REG_I2C_SUBADDR,
1278 (force_subclients[2] & 0x07) |
1279 ((force_subclients[3] & 0x07) << 4));
1280 }
1281
1282 val = w83791d_read(client, W83791D_REG_I2C_SUBADDR);
1283 if (!(val & 0x08))
1284 data->lm75[0] = devm_i2c_new_dummy_device(&client->dev, adapter,
1285 0x48 + (val & 0x7));
1286 if (!(val & 0x80)) {
1287 if (!IS_ERR(data->lm75[0]) &&
1288 ((val & 0x7) == ((val >> 4) & 0x7))) {
1289 dev_err(&client->dev,
1290 "duplicate addresses 0x%x, "
1291 "use force_subclient\n",
1292 data->lm75[0]->addr);
1293 return -ENODEV;
1294 }
1295 data->lm75[1] = devm_i2c_new_dummy_device(&client->dev, adapter,
1296 0x48 + ((val >> 4) & 0x7));
1297 }
1298
1299 return 0;
1300 }
1301
1302
1303 /* Return 0 if detection is successful, -ENODEV otherwise */
1304 static int w83791d_detect(struct i2c_client *client,
1305 struct i2c_board_info *info)
1306 {
1307 struct i2c_adapter *adapter = client->adapter;
1308 int val1, val2;
1309 unsigned short address = client->addr;
1310
1311 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1312 return -ENODEV;
1313
1314 if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80)
1315 return -ENODEV;
1316
1317 val1 = w83791d_read(client, W83791D_REG_BANK);
1318 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1319 /* Check for Winbond ID if in bank 0 */
1320 if (!(val1 & 0x07)) {
1321 if ((!(val1 & 0x80) && val2 != 0xa3) ||
1322 ((val1 & 0x80) && val2 != 0x5c)) {
1323 return -ENODEV;
1324 }
1325 }
1326 /*
1327 * If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
1328 * should match
1329 */
1330 if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address)
1331 return -ENODEV;
1332
1333 /* We want bank 0 and Vendor ID high byte */
1334 val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78;
1335 w83791d_write(client, W83791D_REG_BANK, val1 | 0x80);
1336
1337 /* Verify it is a Winbond w83791d */
1338 val1 = w83791d_read(client, W83791D_REG_WCHIPID);
1339 val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
1340 if (val1 != 0x71 || val2 != 0x5c)
1341 return -ENODEV;
1342
1343 strlcpy(info->type, "w83791d", I2C_NAME_SIZE);
1344
1345 return 0;
1346 }
1347
1348 static int w83791d_probe(struct i2c_client *client)
1349 {
1350 struct w83791d_data *data;
1351 struct device *dev = &client->dev;
1352 int i, err;
1353 u8 has_fanpwm45;
1354
1355 #ifdef DEBUG
1356 int val1;
1357 val1 = w83791d_read(client, W83791D_REG_DID_VID4);
1358 dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n",
1359 (val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1);
1360 #endif
1361
1362 data = devm_kzalloc(&client->dev, sizeof(struct w83791d_data),
1363 GFP_KERNEL);
1364 if (!data)
1365 return -ENOMEM;
1366
1367 i2c_set_clientdata(client, data);
1368 mutex_init(&data->update_lock);
1369
1370 err = w83791d_detect_subclients(client);
1371 if (err)
1372 return err;
1373
1374 /* Initialize the chip */
1375 w83791d_init_client(client);
1376
1377 /*
1378 * If the fan_div is changed, make sure there is a rational
1379 * fan_min in place
1380 */
1381 for (i = 0; i < NUMBER_OF_FANIN; i++)
1382 data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]);
1383
1384 /* Register sysfs hooks */
1385 err = sysfs_create_group(&client->dev.kobj, &w83791d_group);
1386 if (err)
1387 return err;
1388
1389 /* Check if pins of fan/pwm 4-5 are in use as GPIO */
1390 has_fanpwm45 = w83791d_read(client, W83791D_REG_GPIO) & 0x10;
1391 if (has_fanpwm45) {
1392 err = sysfs_create_group(&client->dev.kobj,
1393 &w83791d_group_fanpwm45);
1394 if (err)
1395 goto error4;
1396 }
1397
1398 /* Everything is ready, now register the working device */
1399 data->hwmon_dev = hwmon_device_register(dev);
1400 if (IS_ERR(data->hwmon_dev)) {
1401 err = PTR_ERR(data->hwmon_dev);
1402 goto error5;
1403 }
1404
1405 return 0;
1406
1407 error5:
1408 if (has_fanpwm45)
1409 sysfs_remove_group(&client->dev.kobj, &w83791d_group_fanpwm45);
1410 error4:
1411 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1412 return err;
1413 }
1414
1415 static int w83791d_remove(struct i2c_client *client)
1416 {
1417 struct w83791d_data *data = i2c_get_clientdata(client);
1418
1419 hwmon_device_unregister(data->hwmon_dev);
1420 sysfs_remove_group(&client->dev.kobj, &w83791d_group);
1421
1422 return 0;
1423 }
1424
1425 static void w83791d_init_client(struct i2c_client *client)
1426 {
1427 struct w83791d_data *data = i2c_get_clientdata(client);
1428 u8 tmp;
1429 u8 old_beep;
1430
1431 /*
1432 * The difference between reset and init is that reset
1433 * does a hard reset of the chip via index 0x40, bit 7,
1434 * but init simply forces certain registers to have "sane"
1435 * values. The hope is that the BIOS has done the right
1436 * thing (which is why the default is reset=0, init=0),
1437 * but if not, reset is the hard hammer and init
1438 * is the soft mallet both of which are trying to whack
1439 * things into place...
1440 * NOTE: The data sheet makes a distinction between
1441 * "power on defaults" and "reset by MR". As far as I can tell,
1442 * the hard reset puts everything into a power-on state so I'm
1443 * not sure what "reset by MR" means or how it can happen.
1444 */
1445 if (reset || init) {
1446 /* keep some BIOS settings when we... */
1447 old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG);
1448
1449 if (reset) {
1450 /* ... reset the chip and ... */
1451 w83791d_write(client, W83791D_REG_CONFIG, 0x80);
1452 }
1453
1454 /* ... disable power-on abnormal beep */
1455 w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80);
1456
1457 /* disable the global beep (not done by hard reset) */
1458 tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]);
1459 w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef);
1460
1461 if (init) {
1462 /* Make sure monitoring is turned on for add-ons */
1463 tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG);
1464 if (tmp & 1) {
1465 w83791d_write(client, W83791D_REG_TEMP2_CONFIG,
1466 tmp & 0xfe);
1467 }
1468
1469 tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG);
1470 if (tmp & 1) {
1471 w83791d_write(client, W83791D_REG_TEMP3_CONFIG,
1472 tmp & 0xfe);
1473 }
1474
1475 /* Start monitoring */
1476 tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7;
1477 w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01);
1478 }
1479 }
1480
1481 data->vrm = vid_which_vrm();
1482 }
1483
1484 static struct w83791d_data *w83791d_update_device(struct device *dev)
1485 {
1486 struct i2c_client *client = to_i2c_client(dev);
1487 struct w83791d_data *data = i2c_get_clientdata(client);
1488 int i, j;
1489 u8 reg_array_tmp[3];
1490 u8 vbat_reg;
1491
1492 mutex_lock(&data->update_lock);
1493
1494 if (time_after(jiffies, data->last_updated + (HZ * 3))
1495 || !data->valid) {
1496 dev_dbg(dev, "Starting w83791d device update\n");
1497
1498 /* Update the voltages measured value and limits */
1499 for (i = 0; i < NUMBER_OF_VIN; i++) {
1500 data->in[i] = w83791d_read(client,
1501 W83791D_REG_IN[i]);
1502 data->in_max[i] = w83791d_read(client,
1503 W83791D_REG_IN_MAX[i]);
1504 data->in_min[i] = w83791d_read(client,
1505 W83791D_REG_IN_MIN[i]);
1506 }
1507
1508 /* Update the fan counts and limits */
1509 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1510 /* Update the Fan measured value and limits */
1511 data->fan[i] = w83791d_read(client,
1512 W83791D_REG_FAN[i]);
1513 data->fan_min[i] = w83791d_read(client,
1514 W83791D_REG_FAN_MIN[i]);
1515 }
1516
1517 /* Update the fan divisor */
1518 for (i = 0; i < 3; i++) {
1519 reg_array_tmp[i] = w83791d_read(client,
1520 W83791D_REG_FAN_DIV[i]);
1521 }
1522 data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03;
1523 data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03;
1524 data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03;
1525 data->fan_div[3] = reg_array_tmp[2] & 0x07;
1526 data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07;
1527
1528 /*
1529 * The fan divisor for fans 0-2 get bit 2 from
1530 * bits 5-7 respectively of vbat register
1531 */
1532 vbat_reg = w83791d_read(client, W83791D_REG_VBAT);
1533 for (i = 0; i < 3; i++)
1534 data->fan_div[i] |= (vbat_reg >> (3 + i)) & 0x04;
1535
1536 /* Update PWM duty cycle */
1537 for (i = 0; i < NUMBER_OF_PWM; i++) {
1538 data->pwm[i] = w83791d_read(client,
1539 W83791D_REG_PWM[i]);
1540 }
1541
1542 /* Update PWM enable status */
1543 for (i = 0; i < 2; i++) {
1544 reg_array_tmp[i] = w83791d_read(client,
1545 W83791D_REG_FAN_CFG[i]);
1546 }
1547 data->pwm_enable[0] = (reg_array_tmp[0] >> 2) & 0x03;
1548 data->pwm_enable[1] = (reg_array_tmp[0] >> 4) & 0x03;
1549 data->pwm_enable[2] = (reg_array_tmp[1] >> 2) & 0x03;
1550
1551 /* Update PWM target temperature */
1552 for (i = 0; i < 3; i++) {
1553 data->temp_target[i] = w83791d_read(client,
1554 W83791D_REG_TEMP_TARGET[i]) & 0x7f;
1555 }
1556
1557 /* Update PWM temperature tolerance */
1558 for (i = 0; i < 2; i++) {
1559 reg_array_tmp[i] = w83791d_read(client,
1560 W83791D_REG_TEMP_TOL[i]);
1561 }
1562 data->temp_tolerance[0] = reg_array_tmp[0] & 0x0f;
1563 data->temp_tolerance[1] = (reg_array_tmp[0] >> 4) & 0x0f;
1564 data->temp_tolerance[2] = reg_array_tmp[1] & 0x0f;
1565
1566 /* Update the first temperature sensor */
1567 for (i = 0; i < 3; i++) {
1568 data->temp1[i] = w83791d_read(client,
1569 W83791D_REG_TEMP1[i]);
1570 }
1571
1572 /* Update the rest of the temperature sensors */
1573 for (i = 0; i < 2; i++) {
1574 for (j = 0; j < 3; j++) {
1575 data->temp_add[i][j] =
1576 (w83791d_read(client,
1577 W83791D_REG_TEMP_ADD[i][j * 2]) << 8) |
1578 w83791d_read(client,
1579 W83791D_REG_TEMP_ADD[i][j * 2 + 1]);
1580 }
1581 }
1582
1583 /* Update the realtime status */
1584 data->alarms =
1585 w83791d_read(client, W83791D_REG_ALARM1) +
1586 (w83791d_read(client, W83791D_REG_ALARM2) << 8) +
1587 (w83791d_read(client, W83791D_REG_ALARM3) << 16);
1588
1589 /* Update the beep configuration information */
1590 data->beep_mask =
1591 w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) +
1592 (w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) +
1593 (w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16);
1594
1595 /* Extract global beep enable flag */
1596 data->beep_enable =
1597 (data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01;
1598
1599 /* Update the cpu voltage information */
1600 i = w83791d_read(client, W83791D_REG_VID_FANDIV);
1601 data->vid = i & 0x0f;
1602 data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01)
1603 << 4;
1604
1605 data->last_updated = jiffies;
1606 data->valid = 1;
1607 }
1608
1609 mutex_unlock(&data->update_lock);
1610
1611 #ifdef DEBUG
1612 w83791d_print_debug(data, dev);
1613 #endif
1614
1615 return data;
1616 }
1617
1618 #ifdef DEBUG
1619 static void w83791d_print_debug(struct w83791d_data *data, struct device *dev)
1620 {
1621 int i = 0, j = 0;
1622
1623 dev_dbg(dev, "======Start of w83791d debug values======\n");
1624 dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN);
1625 for (i = 0; i < NUMBER_OF_VIN; i++) {
1626 dev_dbg(dev, "vin[%d] is: 0x%02x\n", i, data->in[i]);
1627 dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]);
1628 dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]);
1629 }
1630 dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN);
1631 for (i = 0; i < NUMBER_OF_FANIN; i++) {
1632 dev_dbg(dev, "fan[%d] is: 0x%02x\n", i, data->fan[i]);
1633 dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]);
1634 dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]);
1635 }
1636
1637 /*
1638 * temperature math is signed, but only print out the
1639 * bits that matter
1640 */
1641 dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN);
1642 for (i = 0; i < 3; i++)
1643 dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]);
1644 for (i = 0; i < 2; i++) {
1645 for (j = 0; j < 3; j++) {
1646 dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j,
1647 (u16) data->temp_add[i][j]);
1648 }
1649 }
1650
1651 dev_dbg(dev, "Misc Information: ===>\n");
1652 dev_dbg(dev, "alarm is: 0x%08x\n", data->alarms);
1653 dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask);
1654 dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable);
1655 dev_dbg(dev, "vid is: 0x%02x\n", data->vid);
1656 dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm);
1657 dev_dbg(dev, "=======End of w83791d debug values========\n");
1658 dev_dbg(dev, "\n");
1659 }
1660 #endif
1661
1662 module_i2c_driver(w83791d_driver);
1663
1664 MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>");
1665 MODULE_DESCRIPTION("W83791D driver");
1666 MODULE_LICENSE("GPL");
Linux with added FPC-III support